+1 non-binding Nice to see that this work is going to trunk. Raja Aluri
On Tue, Feb 26, 2013 at 2:55 PM, Suresh Srinivas <sur...@hortonworks.com>wrote: > I had posted heads up about merging branch-trunk-win to trunk on Feb 8th. I > am happy to announce that we are ready for the merge. > > Here is a brief recap on the highlights of the work done: > - Command-line scripts for the Hadoop surface area > - Mapping the HDFS permissions model to Windows > - Abstracted and reconciled mismatches around differences in Path semantics > in Java and Windows > - Native Task Controller for Windows > - Implementation of a Block Placement Policy to support cloud environments, > more specifically Azure. > - Implementation of Hadoop native libraries for Windows (compression > codecs, native I/O) > - Several reliability issues, including race-conditions, intermittent test > failures, resource leaks. > - Several new unit test cases written for the above changes > > Please find the details of the work in CHANGES.branch-trunk-win.txt - > Common changes<http://bit.ly/Xe7Ynv>, HDFS changes<http://bit.ly/13QOSo9>, > and YARN and MapReduce changes <http://bit.ly/128zzMt>. This is the work > ported from branch-1-win to a branch based on trunk. > > For details of the testing done, please see the thread - > http://bit.ly/WpavJ4. Merge patch for this is available on HADOOP-8562< > https://issues.apache.org/jira/browse/HADOOP-8562>. > > This was a large undertaking that involved developing code, testing the > entire Hadoop stack, including scale tests. This is made possible only with > the contribution from many many folks in the community. Following people > contributed to this work: Ivan Mitic, Chuan Liu, Ramya Sunil, Bikas Saha, > Kanna Karanam, John Gordon, Brandon Li, Chris Nauroth, David Lao, Sumadhur > Reddy Bolli, Arpit Agarwal, Ahmed El Baz, Mike Liddell, Jing Zhao, Thejas > Nair, Steve Maine, Ganeshan Iyer, Raja Aluri, Giridharan Kesavan, Ramya > Bharathi Nimmagadda, Daryn Sharp, Arun Murthy, Tsz-Wo Nicholas Sze, Suresh > Srinivas and Sanjay Radia. There are many others who contributed as well > providing feedback and comments on numerous jiras. > > The vote will run for seven days and will end on March 5, 6:00PM PST. > > Regards, > Suresh > > > > > On Thu, Feb 7, 2013 at 6:41 PM, Mahadevan Venkatraman > <mah...@microsoft.com>wrote: > > > It is super exciting to look at the prospect of these changes being > merged > > to trunk. Having Windows as one of the supported Hadoop platforms is a > > fantastic opportunity both for the Hadoop project and Microsoft > customers. > > > > This work began around a year back when a few of us started with a basic > > port of Hadoop on Windows. Ever since, the Hadoop team in Microsoft have > > made significant progress in the following areas: > > (PS: Some of these items are already included in Suresh's email, but > > including again for completeness) > > > > - Command-line scripts for the Hadoop surface area > > - Mapping the HDFS permissions model to Windows > > - Abstracted and reconciled mismatches around differences in Path > > semantics in Java and Windows > > - Native Task Controller for Windows > > - Implementation of a Block Placement Policy to support cloud > > environments, more specifically Azure. > > - Implementation of Hadoop native libraries for Windows (compression > > codecs, native I/O) - Several reliability issues, including > > race-conditions, intermittent test failures, resource leaks. > > - Several new unit test cases written for the above changes > > > > In the process, we have closely engaged with the Apache open source > > community and have got great support and assistance from the community in > > terms of contributing fixes, code review comments and commits. > > > > In addition, the Hadoop team at Microsoft has also made good progress in > > other projects including Hive, Pig, Sqoop, Oozie, HCat and HBase. Many of > > these changes have already been committed to the respective trunks with > > help from various committers and contributors. It is great to see the > > commitment of the community to support multiple platforms, and we look > > forward to the day when a developer/customer is able to successfully > deploy > > a complete solution stack based on Apache Hadoop releases. > > > > Next Steps: > > > > All of the above changes are part of the Windows Azure HDInsight and > > HDInsight Server products from Microsoft. We have successfully on-boarded > > several internal customers and have been running production workloads on > > Windows Azure HDInsight. Our vision is to create a big data platform > based > > on Hadoop, and we are committed to helping make Hadoop a world-class > > solution that anyone can use to solve their biggest data challenges. > > > > As an immediate next step, we would like to have a discussion around how > > we can ensure that the quality of the mainline Hadoop branches on Windows > > is maintained. To this end, we would like to get to the state where we > have > > pre-checkin validation gates and nightly test runs enabled on Windows. If > > you have any suggestions around this, please do send an email. We are > > committed to helping sustain the long-term quality of Hadoop on both > Linux > > and Windows. > > > > We sincerely thank the community for their contribution and support so > > far. And hope to continue having a close engagement in the future. > > > > -Microsoft HDInsight Team > > > > > > -----Original Message----- > > From: Suresh Srinivas [mailto:sur...@hortonworks.com] > > Sent: Thursday, February 7, 2013 5:42 PM > > To: common-dev@hadoop.apache.org; yarn-...@hadoop.apache.org; > > hdfs-...@hadoop.apache.org; mapreduce-...@hadoop.apache.org > > Subject: Heads up - merge branch-trunk-win to trunk > > > > The support for Hadoop on Windows was proposed in HADOOP-8079< > > https://issues.apache.org/jira/browse/HADOOP-8079> almost a year ago. > The > > goal was to make Hadoop natively integrated, full-featured, and > performance > > and scalability tuned on Windows Server or Windows Azure. > > We are happy to announce that a lot of progress has been made in this > > regard. > > > > Initial work started in a feature branch, branch-1-win, based on > branch-1. > > The details related to the work done in the branch can be seen in > > CHANGES.txt< > > > http://svn.apache.org/viewvc/hadoop/common/branches/branch-1-win/CHANGES.branch-1-win.txt?view=markup > > >. > > This work has been ported to a branch, branch-trunk-win, based on trunk. > > Merge patch for this is available on > > HADOOP-8562<https://issues.apache.org/jira/browse/HADOOP-8562> > > . > > > > Highlights of the work done so far: > > 1. Necessary changes in Hadoop to run natively on Windows. These changes > > handle differences in platforms related to path names, process/task > > management etc. > > 2. Addition of winutils tools for managing file permissions and > ownership, > > user group mapping, hardlinks, symbolic links, chmod, disk utilization, > and > > process/task management. > > 3. Added cmd scripts equivalent to existing shell scripts > > hadoop-daemon.sh, start and stop scripts. > > 4. Addition of block placement policy implemnation to support cloud > > enviroment, more specifically Azure. > > > > We are very close to wrapping up the work in branch-trunk-win and getting > > ready for a merge. Currently the merge patch is passing close to 100% of > > unit tests on Linux. Soon I will call for a vote to merge this branch > into > > trunk. > > > > Next steps: > > 1. Call for vote to merge branch-trunk-win to trunk, when the work > > completes and precommit build is clean. > > 2. Start a discussion on adding Jenkins precommit builds on windows and > > how to integrate that with the existing commit process. > > > > Let me know if you have any questions. > > > > Regards, > > Suresh > > > > > > > -- > http://hortonworks.com/download/ >
